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expeople1 [14]
3 years ago
5

The length of a rectangle is 4 less than 3 time the width. What is the area of the rectangle?

Mathematics
1 answer:
Talja [164]3 years ago
6 0

Use the quations 2L + 2W = Area

and L = 3W -4

Plug the second equation into the first and solve for W

2(3W-4) + 2W = A

6W - 8 + 2W= A

8W - 8 = A

8W = 8

W = 1

Then plug that into the second equation

L = 3(1) -4

L = 3 -4

L = -1

Then plug both of the answers into the first equation

2(-1) + 2(1) = A

-2 + 2 = A

0 = A

That should be the answer, but since there was no given Area, i'm not sure.

I hope this helped though!

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Write the equation of the line parallel to y=2x+7 and contains the points (6,-1)
Liono4ka [1.6K]

Answer: y = 2x - 13

Step-by-step explanation: Start with the formula y=mx+b. Remember that the slope of the parallel line, m, is the same. Now you have y = 2x + b. You can find b, the y intercept, knowing that the line passes through the point given: -1 = (2) * 6 + b. So now we see that b = -13.

7 0
2 years ago
Could you please help me with this problem?
NeTakaya

First Question:

Number of trapezoids - 6

Perimeter - 72

3 + 3 + 3 + 6 = <u>15</u>

3 + 3 + 3 + 3 + 6 + 6 = <u>24</u>

3 + 3 + 6 + 3 + 3 + 6 + 3 + 6 = <u>33</u>

15 + 24 + 33 = <u>72</u>

Second Question:

Number of cubes - 6

Surface area - 24 (probably 480 since it said <em>area</em>)

first cube - 6 ones

second cube - 8 ones

Third cube - 10 ones

you could do 6 + 8 + 10 = 24 or add up all the ones (1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1) and you will still get 24

(It said <em>area</em>, and area means to multiply so maybe its 6 x 8 x 10 = 480 and not 6 + 8 + 10)

Anyways have a good day/night :) I might be wrong, but I hope I helped at least a little

3 0
2 years ago
On your next turn in a board game there is a 60% chance that you will move ahead 4 spaces and a 40% chance that you will move ba
Vika [28.1K]
The expectation value is simply obtained by multiplying the probability of each outcome by each possible value. These are then summed for each outcome to obtain the expectation value. In the board game, if there is a 60% chance that you will move 4 spaces forward (+4) and a 40% chance that you will move back 2 spaces then expected value for number of spaces is (0.6 x 4) + (0.4 x -2) = 2.4 - 0.8 = 1.6 spaces. 
8 0
3 years ago
Plz help me with this problem it’s not that hard at all !!
Brums [2.3K]

Answer:

43x-19y+74

hope this helps!!:)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
I need help ASAP!!<br>Mathematics​
Ilia_Sergeevich [38]

Answer:AGC and DGH are opposite angles.

Step-by-step explanation:

So, Y+10=3x-40

Y-3x=-50-(1)

3x-40=2x

3x-2x=40

x=40

Y-3x40=-50

y-120=-50

y=-50+120

y=70

Hence, the answer is A 70°

3 0
2 years ago
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